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Date: Mon, 26 Nov 2018 17:36:58 +0000
From: Jon Chesterfield <jonathanchesterfield@...il.com>
To: musl@...ts.openwall.com
Subject: Re: 32-bit double and long double
>
> Is there a reason your target is defining double in an unuseful and
> incompatible way rather than doing hard-single and soft-double? If you
> have any control over the choice of ABI, I think the latter makes a
> lot more sense.
>
I can see a few arguments for float==double, but haven't actually done that
for our target yet.
A common error is to write 1.0 instead of 1.0f, where the former sometimes
pulls in the soft double support.
Integer arguments to libm functions promote to double but I would prefer
promote to 32 bit float.
Arguments to variadic functions promote to double. Again I would prefer 32
bit float.
Leaving long double as 64 bit, unlike in the question, means no loss of
functionality relative to double == long double.
Cheers
Jon
>
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